The Times Online tells us that walking to work is a bad idea. A very bad idea as it increases global warming more than driving to work!The article compares driving 3 miles to work versus walking 3 miles to work. They conclude that "If you walked instead, it would use about 180 calories. You'd need about 100g of beef to replace those calories, resulting in 3.6kg of emissions, or four times as much as driving."
Read more: Why You Should Drive to Work if You Want to be a Fat Cow [click]